1 /* $NetBSD: ndp.c,v 1.45 2015/08/03 09:51:40 ozaki-r Exp $ */ 2 /* $KAME: ndp.c,v 1.121 2005/07/13 11:30:13 keiichi Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 /* 33 * Copyright (c) 1984, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * Sun Microsystems, Inc. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 */ 63 64 /* 65 * Based on: 66 * "@(#) Copyright (c) 1984, 1993\n\ 67 * The Regents of the University of California. All rights reserved.\n"; 68 * 69 * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; 70 */ 71 72 /* 73 * ndp - display, set, delete and flush neighbor cache 74 */ 75 76 77 #include <sys/param.h> 78 #include <sys/file.h> 79 #include <sys/ioctl.h> 80 #include <sys/socket.h> 81 #include <sys/sysctl.h> 82 #include <sys/time.h> 83 84 #include <net/if.h> 85 #include <net/if_dl.h> 86 #include <net/if_types.h> 87 #include <net/route.h> 88 89 #include <netinet/in.h> 90 91 #include <netinet/icmp6.h> 92 #include <netinet6/in6_var.h> 93 #include <netinet6/nd6.h> 94 95 #include <arpa/inet.h> 96 97 #include <netdb.h> 98 #include <errno.h> 99 #include <nlist.h> 100 #include <stdio.h> 101 #include <string.h> 102 #include <paths.h> 103 #include <err.h> 104 #include <stdlib.h> 105 #include <fcntl.h> 106 #include <unistd.h> 107 108 #include "gmt2local.h" 109 #include "prog_ops.h" 110 111 static pid_t pid; 112 static int nflag; 113 static int tflag; 114 static int32_t thiszone; /* time difference with gmt */ 115 static int my_s = -1; 116 static unsigned int repeat = 0; 117 118 119 static char host_buf[NI_MAXHOST]; /* getnameinfo() */ 120 static char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 121 122 static void getsocket(void); 123 static int set(int, char **); 124 static void get(char *); 125 static int delete(char *); 126 static void dump(struct in6_addr *, int); 127 static struct in6_nbrinfo *getnbrinfo(struct in6_addr *, unsigned int, int); 128 static char *ether_str(struct sockaddr_dl *); 129 static int ndp_ether_aton(char *, u_char *); 130 __dead static void usage(void); 131 static int rtmsg(int); 132 static void ifinfo(char *, int, char **); 133 static void rtrlist(void); 134 static void plist(void); 135 static void pfx_flush(void); 136 static void rtrlist(void); 137 static void rtr_flush(void); 138 static void harmonize_rtr(void); 139 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 140 static void getdefif(void); 141 static void setdefif(char *); 142 #endif 143 static const char *sec2str(time_t); 144 static char *ether_str(struct sockaddr_dl *); 145 static void ts_print(const struct timeval *); 146 147 #ifdef ICMPV6CTL_ND6_DRLIST 148 static const char *rtpref_str[] = { 149 "medium", /* 00 */ 150 "high", /* 01 */ 151 "rsv", /* 10 */ 152 "low" /* 11 */ 153 }; 154 #endif 155 156 static int mode = 0; 157 static char *arg = NULL; 158 159 int 160 main(int argc, char **argv) 161 { 162 int ch; 163 164 while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1) 165 switch (ch) { 166 case 'a': 167 case 'c': 168 case 'p': 169 case 'r': 170 case 'H': 171 case 'P': 172 case 'R': 173 case 's': 174 case 'I': 175 if (mode) { 176 usage(); 177 /*NOTREACHED*/ 178 } 179 mode = ch; 180 arg = NULL; 181 break; 182 case 'd': 183 case 'f': 184 case 'i' : 185 if (mode) { 186 usage(); 187 /*NOTREACHED*/ 188 } 189 mode = ch; 190 arg = optarg; 191 break; 192 case 'n': 193 nflag = 1; 194 break; 195 case 't': 196 tflag = 1; 197 break; 198 case 'A': 199 if (mode) { 200 usage(); 201 /*NOTREACHED*/ 202 } 203 mode = 'a'; 204 repeat = atoi(optarg); 205 break; 206 default: 207 usage(); 208 } 209 210 argc -= optind; 211 argv += optind; 212 213 if (prog_init && prog_init() == -1) 214 err(1, "init failed"); 215 216 pid = prog_getpid(); 217 thiszone = gmt2local(0L); 218 219 switch (mode) { 220 case 'a': 221 case 'c': 222 if (argc != 0) { 223 usage(); 224 /*NOTREACHED*/ 225 } 226 dump(0, mode == 'c'); 227 break; 228 case 'd': 229 if (argc != 0) { 230 usage(); 231 /*NOTREACHED*/ 232 } 233 (void)delete(arg); 234 break; 235 case 'I': 236 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 237 if (argc > 1) { 238 usage(); 239 /*NOTREACHED*/ 240 } else if (argc == 1) { 241 if (strcmp(*argv, "delete") == 0 || 242 if_nametoindex(*argv)) 243 setdefif(*argv); 244 else 245 errx(1, "invalid interface %s", *argv); 246 } 247 getdefif(); /* always call it to print the result */ 248 break; 249 #else 250 errx(1, "not supported yet"); 251 /*NOTREACHED*/ 252 #endif 253 case 'p': 254 if (argc != 0) { 255 usage(); 256 /*NOTREACHED*/ 257 } 258 plist(); 259 break; 260 case 'i': 261 ifinfo(arg, argc, argv); 262 break; 263 case 'r': 264 if (argc != 0) { 265 usage(); 266 /*NOTREACHED*/ 267 } 268 rtrlist(); 269 break; 270 case 's': 271 if (argc < 2 || argc > 4) 272 usage(); 273 return(set(argc, argv) ? 1 : 0); 274 case 'H': 275 if (argc != 0) { 276 usage(); 277 /*NOTREACHED*/ 278 } 279 harmonize_rtr(); 280 break; 281 case 'P': 282 if (argc != 0) { 283 usage(); 284 /*NOTREACHED*/ 285 } 286 pfx_flush(); 287 break; 288 case 'R': 289 if (argc != 0) { 290 usage(); 291 /*NOTREACHED*/ 292 } 293 rtr_flush(); 294 break; 295 case 0: 296 if (argc != 1) { 297 usage(); 298 /*NOTREACHED*/ 299 } 300 get(argv[0]); 301 break; 302 } 303 return(0); 304 } 305 306 static void 307 getsocket(void) 308 { 309 if (my_s < 0) { 310 my_s = prog_socket(PF_ROUTE, SOCK_RAW, 0); 311 if (my_s < 0) 312 err(1, "socket"); 313 } 314 } 315 316 #ifdef notdef 317 static struct sockaddr_in6 so_mask = { 318 .sin6_len = sizeof(so_mask), 319 .sin6_family = AF_INET6 320 }; 321 #endif 322 static struct sockaddr_in6 blank_sin = { 323 .sin6_len = sizeof(blank_sin), 324 .sin6_family = AF_INET6 325 }; 326 static struct sockaddr_in6 sin_m; 327 static struct sockaddr_dl blank_sdl = { 328 .sdl_len = sizeof(blank_sdl), 329 .sdl_family = AF_LINK, 330 }; 331 static struct sockaddr_dl sdl_m; 332 static int expire_time, flags, found_entry; 333 static struct { 334 struct rt_msghdr m_rtm; 335 char m_space[512]; 336 } m_rtmsg; 337 338 /* 339 * Set an individual neighbor cache entry 340 */ 341 static int 342 set(int argc, char **argv) 343 { 344 register struct sockaddr_in6 *mysin = &sin_m; 345 register struct sockaddr_dl *sdl; 346 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 347 struct addrinfo hints, *res; 348 int gai_error; 349 u_char *ea; 350 char *host = argv[0], *eaddr = argv[1]; 351 352 getsocket(); 353 argc -= 2; 354 argv += 2; 355 sdl_m = blank_sdl; 356 sin_m = blank_sin; 357 358 (void)memset(&hints, 0, sizeof(hints)); 359 hints.ai_family = AF_INET6; 360 gai_error = getaddrinfo(host, NULL, &hints, &res); 361 if (gai_error) { 362 warnx("%s: %s", host, gai_strerror(gai_error)); 363 return 1; 364 } 365 mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr; 366 inet6_putscopeid(mysin, INET6_IS_ADDR_LINKLOCAL); 367 ea = (u_char *)LLADDR(&sdl_m); 368 if (ndp_ether_aton(eaddr, ea) == 0) 369 sdl_m.sdl_alen = 6; 370 flags = expire_time = 0; 371 while (argc-- > 0) { 372 if (strncmp(argv[0], "temp", 4) == 0) { 373 struct timeval tim; 374 375 (void)gettimeofday(&tim, 0); 376 expire_time = tim.tv_sec + 20 * 60; 377 } else if (strncmp(argv[0], "proxy", 5) == 0) 378 flags |= RTF_ANNOUNCE; 379 argv++; 380 } 381 if (rtmsg(RTM_GET) < 0) { 382 errx(1, "RTM_GET(%s) failed", host); 383 /* NOTREACHED */ 384 } 385 mysin = (struct sockaddr_in6 *)(void *)(rtm + 1); 386 sdl = (struct sockaddr_dl *)(void *)(RT_ROUNDUP(mysin->sin6_len) + (char *)(void *)mysin); 387 if (IN6_ARE_ADDR_EQUAL(&mysin->sin6_addr, &sin_m.sin6_addr)) { 388 if (sdl->sdl_family == AF_LINK && 389 (rtm->rtm_flags & RTF_LLINFO) && 390 !(rtm->rtm_flags & RTF_GATEWAY)) { 391 switch (sdl->sdl_type) { 392 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 393 case IFT_ISO88024: case IFT_ISO88025: 394 goto overwrite; 395 } 396 } 397 /* 398 * IPv4 arp command retries with sin_other = SIN_PROXY here. 399 */ 400 (void)fprintf(stderr, "set: cannot configure a new entry\n"); 401 return 1; 402 } 403 404 overwrite: 405 if (sdl->sdl_family != AF_LINK) { 406 warnx("cannot intuit interface index and type for %s", host); 407 return (1); 408 } 409 sdl_m.sdl_type = sdl->sdl_type; 410 sdl_m.sdl_index = sdl->sdl_index; 411 return (rtmsg(RTM_ADD)); 412 } 413 414 /* 415 * Display an individual neighbor cache entry 416 */ 417 static void 418 get(char *host) 419 { 420 struct sockaddr_in6 *mysin = &sin_m; 421 struct addrinfo hints, *res; 422 int gai_error; 423 424 sin_m = blank_sin; 425 (void)memset(&hints, 0, sizeof(hints)); 426 hints.ai_family = AF_INET6; 427 gai_error = getaddrinfo(host, NULL, &hints, &res); 428 if (gai_error) { 429 warnx("%s: %s", host, gai_strerror(gai_error)); 430 return; 431 } 432 mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr; 433 inet6_putscopeid(mysin, INET6_IS_ADDR_LINKLOCAL); 434 dump(&mysin->sin6_addr, 0); 435 if (found_entry == 0) { 436 (void)getnameinfo((struct sockaddr *)(void *)mysin, 437 (socklen_t)mysin->sin6_len, 438 host_buf, sizeof(host_buf), NULL ,0, 439 (nflag ? NI_NUMERICHOST : 0)); 440 errx(1, "%s (%s) -- no entry", host, host_buf); 441 } 442 } 443 444 /* 445 * Delete a neighbor cache entry 446 */ 447 static int 448 delete(char *host) 449 { 450 struct sockaddr_in6 *mysin = &sin_m; 451 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 452 struct sockaddr_dl *sdl; 453 struct addrinfo hints, *res; 454 int gai_error; 455 456 getsocket(); 457 sin_m = blank_sin; 458 459 bzero(&hints, sizeof(hints)); 460 hints.ai_family = AF_INET6; 461 gai_error = getaddrinfo(host, NULL, &hints, &res); 462 if (gai_error) { 463 warnx("%s: %s", host, gai_strerror(gai_error)); 464 return 1; 465 } 466 mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr; 467 inet6_putscopeid(mysin, INET6_IS_ADDR_LINKLOCAL); 468 if (rtmsg(RTM_GET) < 0) 469 errx(1, "RTM_GET(%s) failed", host); 470 mysin = (struct sockaddr_in6 *)(void *)(rtm + 1); 471 sdl = (struct sockaddr_dl *)(void *)(RT_ROUNDUP(mysin->sin6_len) + 472 (char *)(void *)mysin); 473 if (IN6_ARE_ADDR_EQUAL(&mysin->sin6_addr, &sin_m.sin6_addr)) { 474 if (sdl->sdl_family == AF_LINK && 475 (rtm->rtm_flags & RTF_LLINFO) && 476 !(rtm->rtm_flags & RTF_GATEWAY)) { 477 goto delete; 478 } 479 /* 480 * IPv4 arp command retries with sin_other = SIN_PROXY here. 481 */ 482 warnx("delete: cannot delete non-NDP entry"); 483 return 1; 484 } 485 486 delete: 487 if (sdl->sdl_family != AF_LINK) { 488 (void)printf("cannot locate %s\n", host); 489 return (1); 490 } 491 if (rtmsg(RTM_DELETE) == 0) { 492 struct sockaddr_in6 s6 = *mysin; /* XXX: for safety */ 493 494 mysin->sin6_scope_id = 0; 495 inet6_putscopeid(mysin, INET6_IS_ADDR_LINKLOCAL); 496 (void)getnameinfo((struct sockaddr *)(void *)&s6, 497 (socklen_t)s6.sin6_len, host_buf, 498 sizeof(host_buf), NULL, 0, 499 (nflag ? NI_NUMERICHOST : 0)); 500 (void)printf("%s (%s) deleted\n", host, host_buf); 501 } 502 503 return 0; 504 } 505 506 #define W_ADDR 36 507 #define W_LL 17 508 #define W_IF 6 509 510 /* 511 * Dump the entire neighbor cache 512 */ 513 static void 514 dump(struct in6_addr *addr, int cflag) 515 { 516 int mib[6]; 517 size_t needed; 518 char *lim, *buf, *next; 519 struct rt_msghdr *rtm; 520 struct sockaddr_in6 *mysin; 521 struct sockaddr_dl *sdl; 522 struct in6_nbrinfo *nbi; 523 struct timeval tim; 524 int addrwidth; 525 int llwidth; 526 int ifwidth; 527 char flgbuf[8]; 528 const char *ifname; 529 530 /* Print header */ 531 if (!tflag && !cflag) 532 (void)printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 533 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 534 W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 535 536 again:; 537 mib[0] = CTL_NET; 538 mib[1] = PF_ROUTE; 539 mib[2] = 0; 540 mib[3] = AF_INET6; 541 mib[4] = NET_RT_FLAGS; 542 mib[5] = RTF_LLINFO; 543 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 544 err(1, "sysctl(PF_ROUTE estimate)"); 545 if (needed > 0) { 546 if ((buf = malloc(needed)) == NULL) 547 err(1, "malloc"); 548 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 549 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 550 lim = buf + needed; 551 } else 552 buf = lim = NULL; 553 554 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 555 int isrouter = 0, prbs = 0; 556 557 rtm = (struct rt_msghdr *)(void *)next; 558 mysin = (struct sockaddr_in6 *)(void *)(rtm + 1); 559 sdl = (struct sockaddr_dl *)(void *)((char *)(void *)mysin + RT_ROUNDUP(mysin->sin6_len)); 560 561 /* 562 * Some OSes can produce a route that has the LINK flag but 563 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 564 * and BSD/OS, where xx is not the interface identifier on 565 * lo0). Such routes entry would annoy getnbrinfo() below, 566 * so we skip them. 567 * XXX: such routes should have the GATEWAY flag, not the 568 * LINK flag. However, there is rotten routing software 569 * that advertises all routes that have the GATEWAY flag. 570 * Thus, KAME kernel intentionally does not set the LINK flag. 571 * What is to be fixed is not ndp, but such routing software 572 * (and the kernel workaround)... 573 */ 574 if (sdl->sdl_family != AF_LINK) 575 continue; 576 577 if (!(rtm->rtm_flags & RTF_HOST)) 578 continue; 579 580 if (addr) { 581 if (!IN6_ARE_ADDR_EQUAL(addr, &mysin->sin6_addr)) 582 continue; 583 found_entry = 1; 584 } else if (IN6_IS_ADDR_MULTICAST(&mysin->sin6_addr)) 585 continue; 586 if (IN6_IS_ADDR_LINKLOCAL(&mysin->sin6_addr) || 587 IN6_IS_ADDR_MC_LINKLOCAL(&mysin->sin6_addr)) { 588 uint16_t scopeid = mysin->sin6_scope_id; 589 inet6_getscopeid(mysin, INET6_IS_ADDR_LINKLOCAL| 590 INET6_IS_ADDR_MC_LINKLOCAL); 591 if (scopeid == 0) 592 mysin->sin6_scope_id = sdl->sdl_index; 593 } 594 (void)getnameinfo((struct sockaddr *)(void *)mysin, 595 (socklen_t)mysin->sin6_len, 596 host_buf, sizeof(host_buf), NULL, 0, 597 (nflag ? NI_NUMERICHOST : 0)); 598 if (cflag) { 599 #ifdef RTF_WASCLONED 600 if (rtm->rtm_flags & RTF_WASCLONED) 601 (void)delete(host_buf); 602 #elif defined(RTF_CLONED) 603 if (rtm->rtm_flags & RTF_CLONED) 604 (void)delete(host_buf); 605 #else 606 (void)delete(host_buf); 607 #endif 608 continue; 609 } 610 (void)gettimeofday(&tim, 0); 611 if (tflag) 612 ts_print(&tim); 613 614 addrwidth = strlen(host_buf); 615 if (addrwidth < W_ADDR) 616 addrwidth = W_ADDR; 617 llwidth = strlen(ether_str(sdl)); 618 if (W_ADDR + W_LL - addrwidth > llwidth) 619 llwidth = W_ADDR + W_LL - addrwidth; 620 ifname = if_indextoname((unsigned int)sdl->sdl_index, ifix_buf); 621 if (!ifname) 622 ifname = "?"; 623 ifwidth = strlen(ifname); 624 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 625 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 626 627 (void)printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, 628 host_buf, llwidth, llwidth, ether_str(sdl), ifwidth, 629 ifwidth, ifname); 630 631 /* Print neighbor discovery specific informations */ 632 nbi = getnbrinfo(&mysin->sin6_addr, 633 (unsigned int)sdl->sdl_index, 1); 634 if (nbi) { 635 if (nbi->expire > tim.tv_sec) { 636 (void)printf(" %-9.9s", 637 sec2str(nbi->expire - tim.tv_sec)); 638 } else if (nbi->expire == 0) 639 (void)printf(" %-9.9s", "permanent"); 640 else 641 (void)printf(" %-9.9s", "expired"); 642 643 switch (nbi->state) { 644 case ND6_LLINFO_NOSTATE: 645 (void)printf(" N"); 646 break; 647 #ifdef ND6_LLINFO_WAITDELETE 648 case ND6_LLINFO_WAITDELETE: 649 (void)printf(" W"); 650 break; 651 #endif 652 case ND6_LLINFO_INCOMPLETE: 653 (void)printf(" I"); 654 break; 655 case ND6_LLINFO_REACHABLE: 656 (void)printf(" R"); 657 break; 658 case ND6_LLINFO_STALE: 659 (void)printf(" S"); 660 break; 661 case ND6_LLINFO_DELAY: 662 (void)printf(" D"); 663 break; 664 case ND6_LLINFO_PROBE: 665 (void)printf(" P"); 666 break; 667 default: 668 (void)printf(" ?"); 669 break; 670 } 671 672 isrouter = nbi->isrouter; 673 prbs = nbi->asked; 674 } else { 675 warnx("failed to get neighbor information"); 676 (void)printf(" "); 677 } 678 679 /* 680 * other flags. R: router, P: proxy, W: ?? 681 */ 682 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 683 (void)snprintf(flgbuf, sizeof(flgbuf), "%s%s", 684 isrouter ? "R" : "", 685 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 686 } else { 687 mysin = (struct sockaddr_in6 *)(void *) 688 (sdl->sdl_len + (char *)(void *)sdl); 689 #if 0 /* W and P are mystery even for us */ 690 (void)snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 691 isrouter ? "R" : "", 692 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 693 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 694 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 695 #else 696 (void)snprintf(flgbuf, sizeof(flgbuf), "%s%s", 697 isrouter ? "R" : "", 698 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 699 #endif 700 } 701 (void)printf(" %s", flgbuf); 702 703 if (prbs) 704 (void)printf(" %d", prbs); 705 706 (void)printf("\n"); 707 } 708 if (buf != NULL) 709 free(buf); 710 711 if (repeat) { 712 (void)printf("\n"); 713 (void)fflush(stdout); 714 (void)sleep(repeat); 715 goto again; 716 } 717 } 718 719 static struct in6_nbrinfo * 720 getnbrinfo(struct in6_addr *addr, unsigned int ifindex, int warning) 721 { 722 static struct in6_nbrinfo nbi; 723 int s; 724 725 if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 726 err(1, "socket"); 727 728 (void)memset(&nbi, 0, sizeof(nbi)); 729 (void)if_indextoname(ifindex, nbi.ifname); 730 nbi.addr = *addr; 731 if (prog_ioctl(s, SIOCGNBRINFO_IN6, &nbi) < 0) { 732 if (warning) 733 warn("ioctl(SIOCGNBRINFO_IN6)"); 734 (void)prog_close(s); 735 return(NULL); 736 } 737 738 (void)prog_close(s); 739 return(&nbi); 740 } 741 742 static char * 743 ether_str(struct sockaddr_dl *sdl) 744 { 745 static char hbuf[NI_MAXHOST]; 746 747 if (sdl->sdl_alen) { 748 if (getnameinfo((struct sockaddr *)(void *)sdl, 749 (socklen_t)sdl->sdl_len, 750 hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) 751 (void)snprintf(hbuf, sizeof(hbuf), "<invalid>"); 752 } else 753 (void)snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 754 755 return(hbuf); 756 } 757 758 static int 759 ndp_ether_aton(char *a, u_char *n) 760 { 761 int i, o[6]; 762 763 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 764 &o[3], &o[4], &o[5]); 765 if (i != 6) { 766 warnx("invalid Ethernet address '%s'", a); 767 return (1); 768 } 769 for (i = 0; i < 6; i++) 770 n[i] = o[i]; 771 return (0); 772 } 773 774 static void 775 usage(void) 776 { 777 const char *pn = getprogname(); 778 779 (void)fprintf(stderr, "Usage: %s [-nt] hostname\n", pn); 780 (void)fprintf(stderr, 781 " %s [-nt] -a | -c | -p | -r | -H | -P | -R\n", pn); 782 (void)fprintf(stderr, " %s [-nt] -A wait\n", pn); 783 (void)fprintf(stderr, " %s [-nt] -d hostname\n", pn); 784 (void)fprintf(stderr, " %s [-nt] -f filename\n", pn); 785 (void)fprintf(stderr, " %s [-nt] -i interface [flags...]\n", pn); 786 #ifdef SIOCSDEFIFACE_IN6 787 (void)fprintf(stderr, " %s [-nt] -I [interface|delete]\n", pn); 788 #endif 789 (void)fprintf(stderr, 790 " %s [-nt] -s nodename etheraddr [temp] [proxy]\n", pn); 791 exit(1); 792 } 793 794 static int 795 rtmsg(int cmd) 796 { 797 static int seq; 798 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 799 register char *cp = m_rtmsg.m_space; 800 register int l; 801 802 errno = 0; 803 if (cmd == RTM_DELETE) 804 goto doit; 805 (void)memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 806 rtm->rtm_flags = flags; 807 rtm->rtm_version = RTM_VERSION; 808 809 switch (cmd) { 810 default: 811 errx(1, "internal wrong cmd"); 812 /*NOTREACHED*/ 813 case RTM_ADD: 814 rtm->rtm_addrs |= RTA_GATEWAY; 815 if (expire_time) { 816 rtm->rtm_rmx.rmx_expire = expire_time; 817 rtm->rtm_inits = RTV_EXPIRE; 818 } 819 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 820 #ifdef notdef /* we don't support ipv6addr/128 type proxying. */ 821 if (rtm->rtm_flags & RTF_ANNOUNCE) { 822 rtm->rtm_flags &= ~RTF_HOST; 823 rtm->rtm_addrs |= RTA_NETMASK; 824 } 825 #endif 826 /* FALLTHROUGH */ 827 case RTM_GET: 828 rtm->rtm_addrs |= RTA_DST; 829 } 830 #define NEXTADDR(w, s) \ 831 if (rtm->rtm_addrs & (w)) { \ 832 (void)memcpy(cp, &s, sizeof(s)); \ 833 RT_ADVANCE(cp, (struct sockaddr *)(void *)&s); \ 834 } 835 836 NEXTADDR(RTA_DST, sin_m); 837 NEXTADDR(RTA_GATEWAY, sdl_m); 838 #ifdef notdef /* we don't support ipv6addr/128 type proxying. */ 839 (void)memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 840 NEXTADDR(RTA_NETMASK, so_mask); 841 #endif 842 843 rtm->rtm_msglen = cp - (char *)(void *)&m_rtmsg; 844 doit: 845 l = rtm->rtm_msglen; 846 rtm->rtm_seq = ++seq; 847 rtm->rtm_type = cmd; 848 #ifdef __minix 849 /* 850 * Borrow from the future by setting the "this is a link-local request" 851 * flag on all routing socket requests. IMPORTANT: this change may be 852 * dropped with the resync to NetBSD 8 as it will do the same thing, 853 * although slightly differently (and hence may not create a conflict). 854 */ 855 rtm->rtm_flags |= RTF_LLDATA; 856 #endif /* __minix */ 857 if (prog_write(my_s, &m_rtmsg, (size_t)l) == -1) { 858 if (errno != ESRCH || cmd != RTM_DELETE) 859 err(1, "writing to routing socket"); 860 } 861 do { 862 l = prog_read(my_s, &m_rtmsg, sizeof(m_rtmsg)); 863 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 864 if (l < 0) 865 warn("read from routing socket"); 866 return (0); 867 } 868 869 static void 870 ifinfo(char *ifname, int argc, char **argv) 871 { 872 struct in6_ndireq nd; 873 int i, s; 874 u_int32_t newflags; 875 #ifdef IPV6CTL_USETEMPADDR 876 u_int8_t nullbuf[8]; 877 #endif 878 879 if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 880 err(1, "socket"); 881 (void)memset(&nd, 0, sizeof(nd)); 882 (void)strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 883 if (prog_ioctl(s, SIOCGIFINFO_IN6, &nd) < 0) 884 err(1, "ioctl(SIOCGIFINFO_IN6)"); 885 #define ND nd.ndi 886 newflags = ND.flags; 887 for (i = 0; i < argc; i++) { 888 int clear = 0; 889 char *cp = argv[i]; 890 891 if (*cp == '-') { 892 clear = 1; 893 cp++; 894 } 895 896 #define SETFLAG(s, f) \ 897 do {\ 898 if (strcmp(cp, (s)) == 0) {\ 899 if (clear)\ 900 newflags &= ~(f);\ 901 else\ 902 newflags |= (f);\ 903 }\ 904 } while (/*CONSTCOND*/0) 905 /* 906 * XXX: this macro is not 100% correct, in that it matches "nud" against 907 * "nudbogus". But we just let it go since this is minor. 908 */ 909 #define SETVALUE(f, v) \ 910 do { \ 911 char *valptr; \ 912 unsigned long newval; \ 913 v = 0; /* unspecified */ \ 914 if (strncmp(cp, f, strlen(f)) == 0) { \ 915 valptr = strchr(cp, '='); \ 916 if (valptr == NULL) \ 917 err(1, "syntax error in %s field", (f)); \ 918 errno = 0; \ 919 newval = strtoul(++valptr, NULL, 0); \ 920 if (errno) \ 921 err(1, "syntax error in %s's value", (f)); \ 922 v = newval; \ 923 } \ 924 } while (/*CONSTCOND*/0) 925 926 #ifdef ND6_IFF_IFDISABLED 927 SETFLAG("disabled", ND6_IFF_IFDISABLED); 928 #endif 929 SETFLAG("nud", ND6_IFF_PERFORMNUD); 930 #ifdef ND6_IFF_ACCEPT_RTADV 931 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 932 #endif 933 #ifdef ND6_IFF_OVERRIDE_RTADV 934 SETFLAG("override_rtadv", ND6_IFF_OVERRIDE_RTADV); 935 #endif 936 #ifdef ND6_IFF_AUTO_LINKLOCAL 937 SETFLAG("auto_linklocal", ND6_IFF_AUTO_LINKLOCAL); 938 #endif 939 #ifdef ND6_IFF_PREFER_SOURCE 940 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 941 #endif 942 #ifdef ND6_IFF_DONT_SET_IFROUTE 943 SETFLAG("dont_set_ifroute", ND6_IFF_DONT_SET_IFROUTE); 944 #endif 945 SETVALUE("basereachable", ND.basereachable); 946 SETVALUE("retrans", ND.retrans); 947 SETVALUE("curhlim", ND.chlim); 948 949 ND.flags = newflags; 950 #ifdef SIOCSIFINFO_IN6 951 if (prog_ioctl(s, SIOCSIFINFO_IN6, &nd) < 0) 952 err(1, "ioctl(SIOCSIFINFO_IN6)"); 953 #else 954 if (prog_ioctl(s, SIOCSIFINFO_FLAGS, &nd) < 0) 955 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 956 #endif 957 #undef SETFLAG 958 #undef SETVALUE 959 } 960 961 if (!ND.initialized) 962 errx(1, "%s: not initialized yet", ifname); 963 964 if (prog_ioctl(s, SIOCGIFINFO_IN6, &nd) < 0) 965 err(1, "ioctl(SIOCGIFINFO_IN6)"); 966 (void)printf("linkmtu=%d", ND.linkmtu); 967 (void)printf(", maxmtu=%d", ND.maxmtu); 968 (void)printf(", curhlim=%d", ND.chlim); 969 (void)printf(", basereachable=%ds%dms", 970 ND.basereachable / 1000, ND.basereachable % 1000); 971 (void)printf(", reachable=%ds", ND.reachable); 972 (void)printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 973 #ifdef IPV6CTL_USETEMPADDR 974 (void)memset(nullbuf, 0, sizeof(nullbuf)); 975 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 976 int j; 977 u_int8_t *rbuf; 978 979 for (i = 0; i < 3; i++) { 980 switch (i) { 981 case 0: 982 (void)printf("\nRandom seed(0): "); 983 rbuf = ND.randomseed0; 984 break; 985 case 1: 986 (void)printf("\nRandom seed(1): "); 987 rbuf = ND.randomseed1; 988 break; 989 case 2: 990 (void)printf("\nRandom ID: "); 991 rbuf = ND.randomid; 992 break; 993 default: 994 errx(1, "impossible case for tempaddr display"); 995 } 996 for (j = 0; j < 8; j++) 997 (void)printf("%02x", rbuf[j]); 998 } 999 } 1000 #endif 1001 if (ND.flags) { 1002 (void)printf("\nFlags: "); 1003 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1004 (void)printf("nud "); 1005 #ifdef ND6_IFF_IFDISABLED 1006 if ((ND.flags & ND6_IFF_IFDISABLED)) 1007 (void)printf("disabled "); 1008 #endif 1009 #ifdef ND6_IFF_ACCEPT_RTADV 1010 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1011 (void)printf("accept_rtadv "); 1012 #endif 1013 #ifdef ND6_IFF_OVERRIDE_RTADV 1014 if ((ND.flags & ND6_IFF_OVERRIDE_RTADV)) 1015 (void)printf("override_rtadv "); 1016 #endif 1017 #ifdef ND6_IFF_AUTO_LINKLOCAL 1018 if ((ND.flags & ND6_IFF_AUTO_LINKLOCAL)) 1019 (void)printf("auto_linklocal "); 1020 #endif 1021 #ifdef ND6_IFF_PREFER_SOURCE 1022 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1023 (void)printf("prefer_source "); 1024 #endif 1025 } 1026 (void)putc('\n', stdout); 1027 #undef ND 1028 1029 (void)prog_close(s); 1030 } 1031 1032 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1033 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1034 #endif 1035 1036 static void 1037 rtrlist(void) 1038 { 1039 #ifdef ICMPV6CTL_ND6_DRLIST 1040 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1041 char *buf; 1042 struct in6_defrouter *p, *ep; 1043 size_t l; 1044 struct timeval tim; 1045 1046 if (prog_sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1047 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1048 /*NOTREACHED*/ 1049 } 1050 if (l == 0) 1051 return; 1052 buf = malloc(l); 1053 if (!buf) { 1054 err(1, "malloc"); 1055 /*NOTREACHED*/ 1056 } 1057 if (prog_sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1058 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1059 /*NOTREACHED*/ 1060 } 1061 1062 ep = (struct in6_defrouter *)(void *)(buf + l); 1063 for (p = (struct in6_defrouter *)(void *)buf; p < ep; p++) { 1064 int rtpref; 1065 1066 if (getnameinfo((struct sockaddr *)(void *)&p->rtaddr, 1067 (socklen_t)p->rtaddr.sin6_len, host_buf, sizeof(host_buf), 1068 NULL, 0, (nflag ? NI_NUMERICHOST : 0)) != 0) 1069 (void)strlcpy(host_buf, "?", sizeof(host_buf)); 1070 1071 (void)printf("%s if=%s", host_buf, 1072 if_indextoname((unsigned int)p->if_index, ifix_buf)); 1073 (void)printf(", flags=%s%s", 1074 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1075 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1076 rtpref = ((uint32_t)(p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1077 (void)printf(", pref=%s", rtpref_str[rtpref]); 1078 1079 (void)gettimeofday(&tim, 0); 1080 if (p->expire == 0) 1081 (void)printf(", expire=Never\n"); 1082 else 1083 (void)printf(", expire=%s\n", 1084 sec2str((time_t)(p->expire - tim.tv_sec))); 1085 } 1086 free(buf); 1087 #else 1088 struct in6_drlist dr; 1089 int s, i; 1090 struct timeval time; 1091 1092 if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1093 err(1, "socket"); 1094 /* NOTREACHED */ 1095 } 1096 (void)memset(&dr, 0, sizeof(dr)); 1097 (void)strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1098 if (prog_ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1099 err(1, "ioctl(SIOCGDRLST_IN6)"); 1100 /* NOTREACHED */ 1101 } 1102 #define DR dr.defrouter[i] 1103 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1104 struct sockaddr_in6 sin6; 1105 1106 (void)memset(&sin6, 0, sizeof(sin6)); 1107 sin6.sin6_family = AF_INET6; 1108 sin6.sin6_len = sizeof(sin6); 1109 sin6.sin6_addr = DR.rtaddr; 1110 (void)getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 1111 host_buf, sizeof(host_buf), NULL, 0, 1112 (nflag ? NI_NUMERICHOST : 0)); 1113 1114 (void)printf("%s if=%s", host_buf, 1115 if_indextoname(DR.if_index, ifix_buf)); 1116 (void)printf(", flags=%s%s", 1117 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1118 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1119 gettimeofday(&time, 0); 1120 if (DR.expire == 0) 1121 (void)printf(", expire=Never\n"); 1122 else 1123 (void)printf(", expire=%s\n", 1124 sec2str(DR.expire - time.tv_sec)); 1125 } 1126 #undef DR 1127 (void)prog_close(s); 1128 #endif 1129 } 1130 1131 static void 1132 plist(void) 1133 { 1134 #ifdef ICMPV6CTL_ND6_PRLIST 1135 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1136 char *buf, *p, *ep; 1137 struct in6_prefix pfx; 1138 size_t l; 1139 struct timeval tim; 1140 const int niflags = NI_NUMERICHOST; 1141 int ninflags = nflag ? NI_NUMERICHOST : 0; 1142 char namebuf[NI_MAXHOST]; 1143 1144 if (prog_sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1145 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1146 /*NOTREACHED*/ 1147 } 1148 buf = malloc(l); 1149 if (!buf) { 1150 err(1, "malloc"); 1151 /*NOTREACHED*/ 1152 } 1153 if (prog_sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1154 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1155 /*NOTREACHED*/ 1156 } 1157 1158 ep = buf + l; 1159 for (p = buf; p < ep; ) { 1160 memcpy(&pfx, p, sizeof(pfx)); 1161 p += sizeof(pfx); 1162 1163 if (getnameinfo((struct sockaddr*)&pfx.prefix, 1164 (socklen_t)pfx.prefix.sin6_len, namebuf, sizeof(namebuf), 1165 NULL, 0, niflags) != 0) 1166 (void)strlcpy(namebuf, "?", sizeof(namebuf)); 1167 (void)printf("%s/%d if=%s\n", namebuf, pfx.prefixlen, 1168 if_indextoname((unsigned int)pfx.if_index, ifix_buf)); 1169 1170 (void)gettimeofday(&tim, 0); 1171 /* 1172 * meaning of fields, especially flags, is very different 1173 * by origin. notify the difference to the users. 1174 */ 1175 (void)printf("flags=%s%s%s%s%s", 1176 pfx.raflags.onlink ? "L" : "", 1177 pfx.raflags.autonomous ? "A" : "", 1178 (pfx.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1179 (pfx.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1180 #ifdef NDPRF_HOME 1181 (pfx.flags & NDPRF_HOME) != 0 ? "H" : "" 1182 #else 1183 "" 1184 #endif 1185 ); 1186 if (pfx.vltime == ND6_INFINITE_LIFETIME) 1187 (void)printf(" vltime=infinity"); 1188 else 1189 (void)printf(" vltime=%lu", (unsigned long)pfx.vltime); 1190 if (pfx.pltime == ND6_INFINITE_LIFETIME) 1191 (void)printf(", pltime=infinity"); 1192 else 1193 (void)printf(", pltime=%lu", (unsigned long)pfx.pltime); 1194 if (pfx.expire == 0) 1195 (void)printf(", expire=Never"); 1196 else if (pfx.expire >= tim.tv_sec) 1197 (void)printf(", expire=%s", 1198 sec2str(pfx.expire - tim.tv_sec)); 1199 else 1200 (void)printf(", expired"); 1201 (void)printf(", ref=%d", pfx.refcnt); 1202 (void)printf("\n"); 1203 /* 1204 * "advertising router" list is meaningful only if the prefix 1205 * information is from RA. 1206 */ 1207 if (pfx.advrtrs) { 1208 int j; 1209 struct sockaddr_in6 sin6; 1210 1211 (void)printf(" advertised by\n"); 1212 for (j = 0; j < pfx.advrtrs && p <= ep; j++) { 1213 struct in6_nbrinfo *nbi; 1214 1215 memcpy(&sin6, p, sizeof(sin6)); 1216 p += sizeof(sin6); 1217 1218 if (getnameinfo((struct sockaddr *)&sin6, 1219 (socklen_t)sin6.sin6_len, namebuf, 1220 sizeof(namebuf), NULL, 0, ninflags) != 0) 1221 (void)strlcpy(namebuf, "?", sizeof(namebuf)); 1222 (void)printf(" %s", namebuf); 1223 1224 nbi = getnbrinfo(&sin6.sin6_addr, 1225 (unsigned int)pfx.if_index, 0); 1226 if (nbi) { 1227 switch (nbi->state) { 1228 case ND6_LLINFO_REACHABLE: 1229 case ND6_LLINFO_STALE: 1230 case ND6_LLINFO_DELAY: 1231 case ND6_LLINFO_PROBE: 1232 (void)printf(" (reachable)\n"); 1233 break; 1234 default: 1235 (void)printf(" (unreachable)\n"); 1236 } 1237 } else 1238 (void)printf(" (no neighbor state)\n"); 1239 } 1240 } else 1241 (void)printf(" No advertising router\n"); 1242 } 1243 free(buf); 1244 #else 1245 struct in6_prlist pr; 1246 int s, i; 1247 struct timeval time; 1248 1249 (void)gettimeofday(&time, 0); 1250 1251 if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1252 err(1, "socket"); 1253 /* NOTREACHED */ 1254 } 1255 (void)memset(&pr, 0, sizeof(pr)); 1256 (void)strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1257 if (prog_ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1258 err(1, "ioctl(SIOCGPRLST_IN6)"); 1259 /* NOTREACHED */ 1260 } 1261 #define PR pr.prefix[i] 1262 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1263 struct sockaddr_in6 p6; 1264 char namebuf[NI_MAXHOST]; 1265 int niflags; 1266 1267 #ifdef NDPRF_ONLINK 1268 p6 = PR.prefix; 1269 #else 1270 (void)memset(&p6, 0, sizeof(p6)); 1271 p6.sin6_family = AF_INET6; 1272 p6.sin6_len = sizeof(p6); 1273 p6.sin6_addr = PR.prefix; 1274 #endif 1275 1276 niflags = NI_NUMERICHOST; 1277 if (getnameinfo((struct sockaddr *)&p6, 1278 sizeof(p6), namebuf, sizeof(namebuf), 1279 NULL, 0, niflags)) { 1280 warnx("getnameinfo failed"); 1281 continue; 1282 } 1283 (void)printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1284 if_indextoname(PR.if_index, ifix_buf)); 1285 1286 (void)gettimeofday(&time, 0); 1287 /* 1288 * meaning of fields, especially flags, is very different 1289 * by origin. notify the difference to the users. 1290 */ 1291 #if 0 1292 (void)printf(" %s", 1293 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1294 #endif 1295 #ifdef NDPRF_ONLINK 1296 (void)printf("flags=%s%s%s%s%s", 1297 PR.raflags.onlink ? "L" : "", 1298 PR.raflags.autonomous ? "A" : "", 1299 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1300 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1301 #ifdef NDPRF_HOME 1302 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1303 #else 1304 "" 1305 #endif 1306 ); 1307 #else 1308 (void)printf("flags=%s%s", 1309 PR.raflags.onlink ? "L" : "", 1310 PR.raflags.autonomous ? "A" : ""); 1311 #endif 1312 if (PR.vltime == ND6_INFINITE_LIFETIME) 1313 (void)printf(" vltime=infinity"); 1314 else 1315 (void)printf(" vltime=%lu", PR.vltime); 1316 if (PR.pltime == ND6_INFINITE_LIFETIME) 1317 (void)printf(", pltime=infinity"); 1318 else 1319 (void)printf(", pltime=%lu", PR.pltime); 1320 if (PR.expire == 0) 1321 (void)printf(", expire=Never"); 1322 else if (PR.expire >= time.tv_sec) 1323 (void)printf(", expire=%s", 1324 sec2str(PR.expire - time.tv_sec)); 1325 else 1326 (void)printf(", expired"); 1327 #ifdef NDPRF_ONLINK 1328 (void)printf(", ref=%d", PR.refcnt); 1329 #endif 1330 #if 0 1331 switch (PR.origin) { 1332 case PR_ORIG_RA: 1333 (void)printf(", origin=RA"); 1334 break; 1335 case PR_ORIG_RR: 1336 (void)printf(", origin=RR"); 1337 break; 1338 case PR_ORIG_STATIC: 1339 (void)printf(", origin=static"); 1340 break; 1341 case PR_ORIG_KERNEL: 1342 (void)printf(", origin=kernel"); 1343 break; 1344 default: 1345 (void)printf(", origin=?"); 1346 break; 1347 } 1348 #endif 1349 (void)printf("\n"); 1350 /* 1351 * "advertising router" list is meaningful only if the prefix 1352 * information is from RA. 1353 */ 1354 if (0 && /* prefix origin is almost obsolted */ 1355 PR.origin != PR_ORIG_RA) 1356 ; 1357 else if (PR.advrtrs) { 1358 int j; 1359 (void)printf(" advertised by\n"); 1360 for (j = 0; j < PR.advrtrs; j++) { 1361 struct sockaddr_in6 sin6; 1362 struct in6_nbrinfo *nbi; 1363 1364 bzero(&sin6, sizeof(sin6)); 1365 sin6.sin6_family = AF_INET6; 1366 sin6.sin6_len = sizeof(sin6); 1367 sin6.sin6_addr = PR.advrtr[j]; 1368 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1369 (void)getnameinfo((struct sockaddr *)&sin6, 1370 sin6.sin6_len, host_buf, 1371 sizeof(host_buf), NULL, 0, 1372 (nflag ? NI_NUMERICHOST : 0)); 1373 (void)printf(" %s", host_buf); 1374 1375 nbi = getnbrinfo(&sin6.sin6_addr, 1376 PR.if_index, 0); 1377 if (nbi) { 1378 switch (nbi->state) { 1379 case ND6_LLINFO_REACHABLE: 1380 case ND6_LLINFO_STALE: 1381 case ND6_LLINFO_DELAY: 1382 case ND6_LLINFO_PROBE: 1383 (void)printf(" (reachable)\n"); 1384 break; 1385 default: 1386 (void)printf(" (unreachable)\n"); 1387 } 1388 } else 1389 (void)printf(" (no neighbor state)\n"); 1390 } 1391 if (PR.advrtrs > DRLSTSIZ) 1392 (void)printf(" and %d routers\n", 1393 PR.advrtrs - DRLSTSIZ); 1394 } else 1395 (void)printf(" No advertising router\n"); 1396 } 1397 #undef PR 1398 (void)prog_close(s); 1399 #endif 1400 } 1401 1402 static void 1403 pfx_flush(void) 1404 { 1405 char dummyif[IFNAMSIZ+8]; 1406 int s; 1407 1408 if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1409 err(1, "socket"); 1410 (void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1411 if (prog_ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1412 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1413 (void)prog_close(s); 1414 } 1415 1416 static void 1417 rtr_flush(void) 1418 { 1419 char dummyif[IFNAMSIZ+8]; 1420 int s; 1421 1422 if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1423 err(1, "socket"); 1424 (void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1425 if (prog_ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1426 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1427 1428 (void)prog_close(s); 1429 } 1430 1431 static void 1432 harmonize_rtr(void) 1433 { 1434 char dummyif[IFNAMSIZ+8]; 1435 int s; 1436 1437 if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1438 err(1, "socket"); 1439 (void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1440 if (prog_ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1441 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1442 1443 (void)prog_close(s); 1444 } 1445 1446 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1447 static void 1448 setdefif(char *ifname) 1449 { 1450 struct in6_ndifreq ndifreq; 1451 unsigned int ifindex; 1452 int s; 1453 1454 if (strcasecmp(ifname, "delete") == 0) 1455 ifindex = 0; 1456 else { 1457 if ((ifindex = if_nametoindex(ifname)) == 0) 1458 err(1, "failed to resolve i/f index for %s", ifname); 1459 } 1460 1461 if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1462 err(1, "socket"); 1463 1464 (void)strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1465 ndifreq.ifindex = ifindex; 1466 1467 if (prog_ioctl(s, SIOCSDEFIFACE_IN6, &ndifreq) < 0) 1468 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1469 1470 (void)prog_close(s); 1471 } 1472 1473 static void 1474 getdefif(void) 1475 { 1476 struct in6_ndifreq ndifreq; 1477 char ifname[IFNAMSIZ+8]; 1478 int s; 1479 1480 if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1481 err(1, "socket"); 1482 1483 (void)memset(&ndifreq, 0, sizeof(ndifreq)); 1484 (void)strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1485 1486 if (prog_ioctl(s, SIOCGDEFIFACE_IN6, &ndifreq) < 0) 1487 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1488 1489 if (ndifreq.ifindex == 0) 1490 (void)printf("No default interface.\n"); 1491 else { 1492 if ((if_indextoname((unsigned int)ndifreq.ifindex, ifname)) == NULL) 1493 err(1, "failed to resolve ifname for index %lu", 1494 ndifreq.ifindex); 1495 (void)printf("ND default interface = %s\n", ifname); 1496 } 1497 1498 (void)prog_close(s); 1499 } 1500 #endif 1501 1502 static const char * 1503 sec2str(time_t total) 1504 { 1505 static char result[256]; 1506 int days, hours, mins, secs; 1507 int first = 1; 1508 char *p = result; 1509 char *ep = &result[sizeof(result)]; 1510 int n; 1511 1512 days = total / 3600 / 24; 1513 hours = (total / 3600) % 24; 1514 mins = (total / 60) % 60; 1515 secs = total % 60; 1516 1517 if (days) { 1518 first = 0; 1519 n = snprintf(p, (size_t)(ep - p), "%dd", days); 1520 if (n < 0 || n >= ep - p) 1521 return "?"; 1522 p += n; 1523 } 1524 if (!first || hours) { 1525 first = 0; 1526 n = snprintf(p, (size_t)(ep - p), "%dh", hours); 1527 if (n < 0 || n >= ep - p) 1528 return "?"; 1529 p += n; 1530 } 1531 if (!first || mins) { 1532 first = 0; 1533 n = snprintf(p, (size_t)(ep - p), "%dm", mins); 1534 if (n < 0 || n >= ep - p) 1535 return "?"; 1536 p += n; 1537 } 1538 (void)snprintf(p, (size_t)(ep - p), "%ds", secs); 1539 1540 return(result); 1541 } 1542 1543 /* 1544 * Print the timestamp 1545 * from tcpdump/util.c 1546 */ 1547 static void 1548 ts_print(const struct timeval *tvp) 1549 { 1550 int s; 1551 1552 /* Default */ 1553 s = (tvp->tv_sec + thiszone) % 86400; 1554 (void)printf("%02d:%02d:%02d.%06u ", 1555 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1556 } 1557